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research-article

Al/MWCNT composite layer deposition on Aluminum alloy substrate by Selective Laser Melting and Flame Spray

[+] Author and Article Information
Laura Angélica Ardila Rodríguez

Rua Talim 330 São Jose dos Campos, SP 12216510 Brazil laardilar88@gmail.com

Bruno B. Medeiros

Via do Conhecimento, KM 01, s/n - Fraron Pato Branco, PR 85503-390 Brazil brunojau@gmail.com

Aline Capella de Oliveira

Rua Talim 330 São José dos Campos, SP 12231-280 Brazil alinecapella@gmail.com

Dilermando Travessa

Rua Talim 330 São José dos Campos, SP 12231-280 Brazil dilermando.unifesp@gmail.com

1Corresponding author.

Manuscript received February 22, 2019; final manuscript received July 26, 2019; published online xx xx, xxxx. Assoc. Editor: Y. Lawrence Yao.

ASME doi:10.1115/1.4044419 History: Received February 22, 2019; Accepted July 26, 2019

Abstract

This study compares two processing routes, Selective Laser Melting (SLM) and Flame Spray (FS) to fabricate an Al/MWCNT composite layer over an aluminum alloy 6013 (AA6013) substrate. The final surface and cross-sections morphologies were evaluated by Scanning Electron Microscopy (SEM) and Optical Microscopy (OM). The effect of these processing routes on the multiwall carbon nanotubes (MWCNT) was evaluated by X-ray diffraction (XRD) and Raman spectroscopy (RS). Finally, the mechanical properties were evaluated by Vickers microhardness. The Raman bands corresponding to carbon were identified in the spectrum of both samples processed by SLM and FS. However, in the latter was also identified the Al4C3 formation. The Vickers microhardness results show an increase in the hardness values of the FS and SLM processed coatings of 44% and 9%, respectively, when compared to the AA6013 substrate.

Copyright © 2019 by ASME
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